The Clash excelled at making rough-hewn clips that were true to their music, partly because most were directed by their pal Don Letts, a filmmaking novice. The videos could be shadowy portents (“London Calling”), cop-show spoofs (“I Fought the Law”), or comical provocations (“Rock the Casbah,” where a Hasidic Jew and a kaffiyeh-wearing Muslim defy stereotypes), and collectively, they proved “punk-music video” wasn't an oxymoron.